FIX: Queries should be accent sensitive now.

tests/test_issues_server.py

@@ -1555,7 +1555,6 @@ def test_263():
     assert exc.errors[0].msg == "Entity does not exist."  # TODO Or whatever the message shall be.
 
 
-@pytest.mark.xfail(reason="https://gitlab.com/linkahead/linkahead-server/-/issues/264")
 def test_264_accents_and_umlauts():
     """Test whether queries respect accents and
     umlauts. https://gitlab.com/linkahead/linkahead-server/-/issues/264.